Electrical Engineering
Series & Parallel Resistance Calculator
⚡ Up to 10 Resistors
Calculate total resistance in series, parallel, or mixed circuits with multiple resistors.
Circuit Configuration
Circuit Type
Series: R_total = R₁ + R₂ + ... | Parallel: 1/R_total = 1/R₁ + 1/R₂ + ...
Resistor Values
R₁
Ω
R₂
Ω
R₃
Ω
No resistors added
Total
0Ω
Total Resistance
0 Ω
series
Resistors
0
Total Value
0 Ω
Equivalent
0 Ω
📊 Detailed Breakdown
| Resistor | Value | Contribution |
|---|
How the formula works
Series: R_total = R₁ + R₂ + R₃ + ...
- Series Circuit: R_total = R₁ + R₂ + R₃ + ... (add all resistors)
- Parallel Circuit: 1/R_total = 1/R₁ + 1/R₂ + 1/R₃ + ... (reciprocal sum)
- Enter resistor values in ohms (Ω)
- Values of 0 are ignored in calculations
- Add up to 10 resistors using the "Add Resistor" button
- Remove resistors using the ✕ button on each row